Tsukune has a typical relationship with his parents and is a loving son. They were initially worried about Tsukune not being able to get into any high school until the faithful day that his father, Kōji, found a flier for Yōkai Academy. He kept his parents informed of his time at Yokai Academy (albeit without the details of the Yōkai there.) His father is never really shown in depth in the series aside from a few panels in the manga and a short one-liner at the end of the first season anime.